Fatigue crack growth in polymers
Fatigue crack growth in polymers
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DOI：
10.1016/s0142-9418(00)00039-8
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发表时间：
2001-01-01
期刊：
影响因子：
5.1
通讯作者：
Armbrust, T
中科院分区：
文献类型：
--
作者：
Ramsteiner, F;Armbrust, T
在断裂力学的框架内，聚合物的疲劳是由裂纹扩展速率作为应力强度因子的振幅和频率的函数来表征的。测量是从一个独立于固有的自然或表面缺陷的缺口试样开始的。在应用该方法的过程中产生了一些实验问题，本文对其中的一些问题进行了处理。特别是裂纹扩展的测量，试样形状和施加频率的影响，恒定或增加应力强度振幅的测量，以及作为内部变形机制转变信号的裂纹扩展。2001爱思唯尔科学有限公司版权所有。
Within the framework of fracture mechanics the fatigue of polymers is characterised by the rate of crack propagation as a function of the amplitude and frequency of the stress intensity factor. The measurements are performed by starting with a notched specimen to be independent of inherent natural or surface defects. In application of this method some experimental questions have come about, some of which are dealt with in this work. In particular, the measurement of crack propagation, the influence of the shape of the specimen and the applied frequency, the measurement with constant or increasing stress intensity amplitude and the propagating crack as a signal for transitions in internal deformation mechanisms. (C) 2001 Elsevier Science Ltd. All rights reserved.